Process for making hand wheels



&.KNUEEL PROCESS FOR MAKING HAND WHEELS mma Das. 31. 192@ inserted through an aperture provided in the upper part of the form, and in said aperture of the upper part of the form a nippleis screwed. It compressed carbonio acid, steam, ete, is admitted through the nipple it'e'nters into the interior et the rim and causes the latter to permanently shape itself to the interior of the form. The wa l of the rim closes tightly about lthe lateral extensions of the spokes and connects the rim and the spokes without the necessity of cutting out any parts from the rim. As Fig- 3 shows, the material is somewhat. stretched at the parts connecting the rim and the spokes and a firmer hold is maintained so that any fracture at these parts is avoided, which otherwise may very easily occur if the rim is cut for the purpose o' inserting the lateral extensions of the spokes.

.lifter the rim has been fully expanded it is allowed to cool, the t'orm is opened, the prepared wheel is removed and now only re quires to be polished.

lf it is desired to provide the upper surface oi the rim witn tlutings or the like in order to make it more easily grasped, or to provide lettering or the like, stencils can be laid in the lower halt' ot' the form before the celluloid tube is inserted.

l claim:

l. The process herein described of making hand-wheels having a hollow Celluloid rim and spokes ot' different material, consisting in first heating soi'ten it, then placing it in' a term or mold with the inner `face of the rim abutting; thcI ends of the spokes, then. admitting fluid to the interior of the rim to expand the same around the ends ot the spokes so that said ends of the spokes will extend into depressions in the rim, and then permitting the rim to harden to thus interlock the rim with the ends of the spokes. n

fl`he process herein described of making ,Ltccringnvhecls having a hollow celluloidl rim joined tothe ends of spokes, said rim being originally circular in crosfseetion, consisting! in tirst renderingA the rim pliable by heating' the same, then laying the rini thus heated into a forni ot' non-circular lll cross-section., then admitting a fluid to th l interior of the rim to expand the same to conform with the non-circular cross-section ot the form and to also envcloi)` the ends of thel spokes. and then permitting' the rini to harden to. thus interlock the rim with the ends o l' the spokes.

3. The process herein described of ymaking steering-wheels having a hollow celluloid the hollow rim to.

lrim joined to the ends of spokes, said' rim being originally circular in cross-section, consisting intirst rendering the rim pliable by heating the same, then laying the rim thus heated into a form of non-circular cross-section, then admitting a fluid to the interior of the rim to expand the same to conform with the non-circular cross-section of the t'orm and to also envelop the ends of the spokes. -and then permitting the rim to harden to thus interlock the riin with the ends of the spokes, said spoke-ends heini.;A

enlarged in both directions laterally to thereby provide a ,f u'catcr connecting surface with the rim.

4. The process herein described of making hand-wheels having a hollow (zelluloid rim and spokes of dill'crcnt material, consisting in tirst heating the hollow rini to soften it, then placing it in a 'forni or lnold with the rinner face of thcl rim abutting-the ends ot' the spokes, then admitting a fluid to the interior ot' the rim to expand the same around the ends ot the spokes so that said ends of the spokes will extend into depressions in the rim, and then permitting the rim to harden to thus interlock the rim with they ends ot' the spokes, said rim consisting of a straight tube bent into circular form and having its ends connected by being'telescoped one into the other.

5. The process herein described of making hand-wheels having a -hollow Celluloid rim and spokes of different material, consisting in first heatingv the hollow rinrto soften it, then placing it in a form or mold with the inner tace of the rim abutting` the ends of the spokes, then admitting a fluid to the interior ot' the rim to expand the same around the ends of the spokes so that said ends of the spokes will extend into depressions in the rim, and thin permitting the rim to harden to thus i terlock"the rim with the ends of the spokes, the, cross-section of the annular space of the form bein oval, the breadth being greater than the eight, and the rim being somewhat smallervin breadth than the space to permit it to be' inserted in the form on the outside lot' the ends of the spokes.

(3. The proces herein described of making h'and-wheels having a hollow Celluloid rim and spokes of different material, consisting in irst heating the hollow rim to soften it, then placing it in a form or mold with the inner face of the rim abutting the ends of the spokes, then admitting a fluid to the interior of the rim to expand the same around vthe ends of the spokes s0 that said ends of" the spokes will extend into depressions in harden to thus interlock the rim with the rthe rino' and then permitting the rim to in thojorm so as to thereby provide the rim with such indentations or projections as are desired.

7. The method ol attaching the grip-rim 5 to the Spokes of :l Steo1'in;-\vheel consisting in softening a hollow rim of plastic material, then hy interior fluid pressure causing the wall of they rim to closely envelop the ends of the spokes without disrupting the wall, and then permanently locking the '10.

rim to the Spokes h v permitting the rim to harden.

J. Ziois, P. G. HBINHAGE. 

